使用JAVA的JFinal框架
1.上传文件模型类UploadFile
1 /** 2 * Copyright (c) 2011-2017, James Zhan 詹波 ([email protected]). 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.jfinal.upload; 18 19 import java.io.File; 20 21 /** 22 * UploadFile. 23 */ 24 public class UploadFile { 25 26 private String parameterName; 27 28 private String uploadPath; 29 private String fileName; 30 private String originalFileName; 31 private String contentType; 32 33 public UploadFile(String parameterName, String uploadPath, String filesystemName, String originalFileName, String contentType) { 34 this.parameterName = parameterName; 35 this.uploadPath = uploadPath; 36 this.fileName = filesystemName; 37 this.originalFileName = originalFileName; 38 this.contentType = contentType; 39 } 40 41 public String getParameterName() { 42 return parameterName; 43 } 44 45 public String getFileName() { 46 return fileName; 47 } 48 49 public String getOriginalFileName() { 50 return originalFileName; 51 } 52 53 public String getContentType() { 54 return contentType; 55 } 56 57 public String getUploadPath() { 58 return uploadPath; 59 } 60 61 public File getFile() { 62 if (uploadPath == null || fileName == null) { 63 return null; 64 } else { 65 return new File(uploadPath + File.separator + fileName); 66 } 67 } 68 }
2.文件操作工具类
1 package eracare.util; 2 3 import java.io.BufferedReader; 4 import java.io.File; 5 import java.io.FileInputStream; 6 import java.io.FileOutputStream; 7 import java.io.FileWriter; 8 import java.io.IOException; 9 import java.io.InputStream; 10 import java.io.InputStreamReader; 11 import java.io.PrintWriter; 12 import java.util.StringTokenizer; 13 /** 14 * 文件操作工具类 15 * 读、增、删除、复制 16 * @author user001 17 * 18 */ 19 public class FileOperate { 20 private String message; 21 public FileOperate() { 22 } 23 /** 24 * 读取文本文件内容 25 * @param filePathAndName 带有完整绝对路径的文件名 26 * @param encoding 文本文件打开的编码方式 27 * @return 返回文本文件的内容 28 */ 29 public String readTxt(String filePathAndName,String encoding) throws IOException{ 30 encoding = encoding.trim(); 31 StringBuffer str = new StringBuffer(""); 32 String st = ""; 33 try{ 34 FileInputStream fs = new FileInputStream(filePathAndName); 35 InputStreamReader isr; 36 if(encoding.equals("")){ 37 isr = new InputStreamReader(fs); 38 }else{ 39 isr = new InputStreamReader(fs,encoding); 40 } 41 BufferedReader br = new BufferedReader(isr); 42 try{ 43 String data = ""; 44 while((data = br.readLine())!=null){ 45 str.append(data+" "); 46 } 47 }catch(Exception e){ 48 str.append(e.toString()); 49 } 50 st = str.toString(); 51 }catch(IOException es){ 52 st = ""; 53 } 54 return st; 55 } 56 /** 57 * 新建目录 58 * @param folderPath 目录 59 * @return 返回目录创建后的路径 60 */ 61 public void createFolder(String folderPath) { 62 // String txt = folderPath; 63 try { 64 java.io.File myFilePath = new java.io.File(folderPath); 65 // txt = folderPath; 66 if (!myFilePath.exists()) { 67 myFilePath.mkdir(); 68 } 69 } 70 catch (Exception e) { 71 message = "创建目录操作出错"; 72 } 73 // return txt; 74 } 75 76 /** 77 * 多级目录创建 78 * @param folderPath 准备要在本级目录下创建新目录的目录路径 例如 c:myf 79 * @param paths 无限级目录参数，各级目录以单数线区分 例如 a|b|c 80 * @return 返回创建文件后的路径 例如 c:myfa c 81 */ 82 public void createFolders(String folderPath, String paths){ 83 String txts = folderPath; 84 try{ 85 String txt; 86 txts = folderPath; 87 StringTokenizer st = new StringTokenizer(paths,"|"); 88 for(int i=0; st.hasMoreTokens(); i++){ 89 txt = st.nextToken().trim(); 90 if(txts.lastIndexOf("/")!=-1){ 91 createFolder(txts+txt); 92 }else{ 93 createFolder(txts+txt+"/"); 94 } 95 } 96 }catch(Exception e){ 97 message = "创建目录操作出错！"; 98 } 99 // return txts; 100 } 101 /** 102 * 新建文件 103 * @param filePathAndName 文本文件完整绝对路径及文件名 104 * @param fileContent 文本文件内容 105 * @return 106 */ 107 public void createFile(String filePathAndName, String fileContent) { 108 try { 109 String filePath = filePathAndName; 110 filePath = filePath.toString(); 111 File myFilePath = new File(filePath); 112 if (!myFilePath.exists()) { 113 myFilePath.createNewFile(); 114 } 115 FileWriter resultFile = new FileWriter(myFilePath); 116 PrintWriter myFile = new PrintWriter(resultFile); 117 String strContent = fileContent; 118 myFile.println(strContent); 119 myFile.close(); 120 resultFile.close(); 121 } 122 catch (Exception e) { 123 message = "创建文件操作出错"; 124 } 125 } 126 /** 127 * 有编码方式的文件创建 128 * @param filePathAndName 文本文件完整绝对路径及文件名 129 * @param fileContent 文本文件内容 130 * @param encoding 编码方式 例如 GBK 或者 UTF-8 131 * @return 132 */ 133 public void createFile(String filePathAndName, String fileContent, String encoding) { 134 135 try { 136 String filePath = filePathAndName; 137 filePath = filePath.toString(); 138 File myFilePath = new File(filePath); 139 if (!myFilePath.exists()) { 140 myFilePath.createNewFile(); 141 } 142 PrintWriter myFile = new PrintWriter(myFilePath,encoding); 143 String strContent = fileContent; 144 myFile.println(strContent); 145 myFile.close(); 146 } 147 catch (Exception e) { 148 message = "创建文件操作出错"; 149 } 150 } 151 /** 152 * 删除文件 153 * @param filePathAndName 文本文件完整绝对路径及文件名 154 * @return Boolean 成功删除返回true遭遇异常返回false 155 */ 156 public boolean delFile(String filePathAndName) { 157 boolean bea = false; 158 try { 159 String filePath = filePathAndName; 160 File myDelFile = new File(filePath); 161 if(myDelFile.exists()){ 162 myDelFile.delete(); 163 bea = true; 164 }else{ 165 bea = false; 166 message = (filePathAndName+"删除文件操作出错"); 167 } 168 } 169 catch (Exception e) { 170 message = e.toString(); 171 } 172 return bea; 173 } 174 175 /** 176 * 删除文件夹 177 * @param folderPath 文件夹完整绝对路径 178 * @return 179 */ 180 public void delFolder(String folderPath) { 181 try { 182 delAllFile(folderPath); //删除完里面所有内容 183 String filePath = folderPath; 184 filePath = filePath.toString(); 185 java.io.File myFilePath = new java.io.File(filePath); 186 myFilePath.delete(); //删除空文件夹 187 } 188 catch (Exception e) { 189 message = ("删除文件夹操作出错"); 190 } 191 } 192 /** 193 * 删除指定文件夹下所有文件 194 * @param path 文件夹完整绝对路径 195 * @return 196 * @return 197 */ 198 public boolean delAllFile(String path) { 199 boolean bea = false; 200 File file = new File(path); 201 if (!file.exists()) { 202 return bea; 203 } 204 if (!file.isDirectory()) { 205 return bea; 206 } 207 String[] tempList = file.list(); 208 File temp = null; 209 for (int i = 0; i < tempList.length; i++) { 210 if (path.endsWith(File.separator)) { 211 temp = new File(path + tempList[i]); 212 }else{ 213 temp = new File(path + File.separator + tempList[i]); 214 } 215 if (temp.isFile()) { 216 temp.delete(); 217 } 218 if (temp.isDirectory()) { 219 delAllFile(path+"/"+ tempList[i]);//先删除文件夹里面的文件 220 delFolder(path+"/"+ tempList[i]);//再删除空文件夹 221 bea = true; 222 } 223 } 224 return bea; 225 } 226 227 /** 228 * 复制单个文件 229 * @param oldPathFile 准备复制的文件源 230 * @param newPathFile 拷贝到新绝对路径带文件名 231 * @return 232 */ 233 public void copyFile(String oldPathFile, String newPathFile) { 234 try { 235 int bytesum = 0; 236 int byteread = 0; 237 File oldfile = new File(oldPathFile); 238 if (oldfile.exists()) { //文件存在时 239 InputStream inStream = new FileInputStream(oldPathFile); //读入原文件 240 FileOutputStream fs = new FileOutputStream(newPathFile); 241 byte[] buffer = new byte[10485760]; 242 while((byteread = inStream.read(buffer)) != -1){ 243 bytesum += byteread; //字节数 文件大小 244 fs.write(buffer, 0, byteread); 245 } 246 inStream.close(); 247 } 248 }catch (Exception e) { 249 message = ("复制单个文件操作出错"); 250 } 251 } 252 /** 253 * 复制整个文件夹的内容 254 * @param oldPath 准备拷贝的目录 255 * @param newPath 指定绝对路径的新目录 256 * @return 257 */ 258 public void copyFolder(String oldPath, String newPath) { 259 try { 260 new File(newPath).mkdirs(); //如果文件夹不存在 则建立新文件夹 261 File a=new File(oldPath); 262 String[] file=a.list(); 263 File temp=null; 264 for (int i = 0; i < file.length; i++) { 265 if(oldPath.endsWith(File.separator)){ 266 temp=new File(oldPath+file[i]); 267 }else{ 268 temp=new File(oldPath+File.separator+file[i]); 269 } 270 if(temp.isFile()){ 271 FileInputStream input = new FileInputStream(temp); 272 FileOutputStream output = new FileOutputStream(newPath + "/" + 273 (temp.getName()).toString()); 274 byte[] b = new byte[1024 * 5]; 275 int len; 276 while ((len = input.read(b)) != -1) { 277 output.write(b, 0, len); 278 } 279 output.flush(); 280 output.close(); 281 input.close(); 282 } 283 if(temp.isDirectory()){//如果是子文件夹 284 copyFolder(oldPath+"/"+file[i],newPath+"/"+file[i]); 285 } 286 } 287 }catch (Exception e) { 288 message = "复制整个文件夹内容操作出错"; 289 } 290 } 291 292 /** 293 * 移动文件 294 * @param oldPath 295 * @param newPath 296 * @return 297 */ 298 public void moveFile(String oldPath, String newPath) { 299 copyFile(oldPath, newPath); 300 delFile(oldPath); 301 } 302 303 /** 304 * 移动目录 305 * @param oldPath 306 * @param newPath 307 * @return 308 */ 309 public void moveFolder(String oldPath, String newPath) { 310 copyFolder(oldPath, newPath); 311 delFolder(oldPath); 312 } 313 public String getMessage(){ 314 return this.message; 315 } 316 }
我写博，主要是为了记录一些自己在工作中遇到的难点、痛点。因为是完成工作后的记录，有一些代码是网上查找的具体出处忘记了。如果代码有什么问题，欢迎大家留言！